Todat I decided to check sparkplug tightness on my 2014 ridge with 20k miles -I know -way early but after reading many post on ridgeline, pilot, odyessy, mdx etc sites I became concerned as many people have had loose plugs at all different mileages (some as low as 30k) and many have had plugs blow out with serious engine damage. Anyway if you remove 2 phillips head screws holding cooling fan back cover then that cover can be pivoted in either direction which allows you to easily remove coils and then access plugs. Unfortunately getting tose 2 phillips head screws out may be tough- on mine both heads immediately deformed due to really cheap,soft metal of screw heads so it took me about 30 min to get them out using visegrips on threaded part and a variety of pliers on screw heads -i exchanged them for hex head screws so next time it will be quick and easy. So checking all plugs takes only about 20min once you can pivot this fan plate -rear ones are done mostly by feel but there is plenty of room so its pretty easy. Mine were all tight -I didnt check torque as I didnt want to disturb them if they were still tight as they were. I will be checking them now probably every oil chg or two as consequences of loose plug are so serious.